| article html file updated | 7 February 2020 07:15 CET | Update | https://www.mdpi.com/2072-666X/7/4/68 |
| article html file updated | 5 May 2019 18:40 CEST | Update | N/A |
| article html file updated | 27 March 2019 01:51 CET | Update | N/A |
| article html file updated | 15 October 2018 04:31 CEST | Update | N/A |
| article html file updated | 29 April 2016 05:33 CEST | Update | N/A |
| article html file updated | 15 April 2016 12:49 CEST | Update | N/A |
| article xml uploaded. | 15 April 2016 12:48 CEST | Update | https://www.mdpi.com/2072-666X/7/4/68/xml |
| article pdf uploaded. | 15 April 2016 12:48 CEST | Updated version of record | https://www.mdpi.com/2072-666X/7/4/68/pdf |
| article html file updated | 14 April 2016 08:56 CEST | Original file | N/A |
| article pdf uploaded. | 14 April 2016 08:55 CEST | Version of Record | https://www.mdpi.com/2072-666X/7/4/68/pdf-vor |
